Stream: git-wasmtime

Topic: wasmtime / PR #10374 `AnyRef::from_raw` needs to clone it...

Wasmtime GitHub notifications bot (Mar 11 2025 at 23:36):

fitzgen opened PR #10374 from fitzgen:anyref-from-raw-clone-gc-ref to bytecodealliance:main:

Like ExternRef::from_raw does.

This is because while to_raw clones the GC ref, it also exposes it to Wasm, inserting it into the DRC collector's table, which effectively gives ownership of that clone to Wasm. Then, if we don't clone in from_raw, when a GC is triggered, the DRC collector will see that Wasm isn't holding the ref alive anymore and will decref (and perhaps even deallocate) it, which leaves the AnyRef we constructed via from_raw dangling.

Fixes #10182

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Wasmtime GitHub notifications bot (Mar 11 2025 at 23:36):

fitzgen requested pchickey for a review on PR #10374.

Wasmtime GitHub notifications bot (Mar 11 2025 at 23:36):

fitzgen requested wasmtime-core-reviewers for a review on PR #10374.

Wasmtime GitHub notifications bot (Mar 12 2025 at 01:05):

github-actions[bot] commented on PR #10374:

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cc @fitzgen

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Wasmtime GitHub notifications bot (Mar 12 2025 at 02:03):

alexcrichton submitted PR review.

Wasmtime GitHub notifications bot (Mar 12 2025 at 02:24):

alexcrichton merged PR #10374.

Last updated: Dec 13 2025 at 19:03 UTC